Most popular questions
  1. college

    how would you go about doing this type of problem thank you You are trying to raise a bicycle wheel of mass x and radius r up over a curb of height h . To do this, you apply a horizontal force . 1. What is the least magnitude of the force that will succeed

    asked by amy on May 18, 2009
  2. college

    You buy an eight year bond that has a 6% current yield and a 6% coupon (paid annually). In one year, promised yields to maturity have risen to 7%. What is your holding period return?

    asked by Anonymous on December 3, 2010
  3. college

    what is the mass of solute dissolved in 50.0g of a 12.5% saline solution?

    asked by debbie on December 16, 2010
  4. college

    Assume you are performing the calibration step of Experiment 8 and you begin with 80 g of water at 20 oC and 80 g of water at 80 oC. After adding the two portions of water into your calorimeter setup and following the procedure outlined in the experiment,

    asked by Jim on October 28, 2009
  5. college

    Joan wants to start an IRA that will have $250,000 in it when she retires in 21 years. How much should she invest annually in her IRA to do this if the interest is 16% compounded quarterly?

    asked by Anonymous on February 27, 2012
  6. college

    A solid is known to be either BaCO3 or CaCO3. It is dissolved in 6 M acetic acid. A pale yellow precipitate forms when K2CrO4 solution is added. The subsequent flame test with that precipitate shows an orange-red color. Which cation is present? Briefly

    asked by Anonymous on March 22, 2013
  7. college

    XYZ's receivables turnover is 10x. The accounts receivable at year-end are $600,000. The average collection period is 36 days. What was the sales figure for the year assuming all sales are on credit?

    asked by Pam on November 9, 2010
  8. college

    what is GPA for college

    asked by Star on October 29, 2018
  9. college

    Find the minimum initial speed of a projectile in order for it to reach a height of 2039 km above the surface of the earth.

    asked by Anonymous on April 29, 2010
  10. college

    Consider the titration of 50.0 mL of 0.20 M NH3 (Kb=1.8*10^-5) with 0.20 M HNO3. Calculate the pH after addition of 50.0 mL of the titrant.

    asked by Syra on June 21, 2010
  11. college

    A typical ten-pound car wheel has a moment of inertia of about 0.35 kg*m^2. The wheel rotates about the axle at a constant angular speed making 45.0 full revolutions in a time interval of 7.00 sec . What is the rotational kinetic energy of the rotating

    asked by Anonymous on October 25, 2009
  12. college

    Please help me write a discussion on the 3 market shifts in the fashion industry

    asked by natalie on October 27, 2008
  13. college

    A baseball pitcher throws a baseball with a speed of 38 . In throwing the baseball, the pitcher accelerates the ball through a displacement of about 3.5 , from behind the body to the point where it is released Estimate the average acceleration of the ball

    asked by Anonymous on September 20, 2010
  14. college

    A 3.2 kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling and has an elastic potential energy of 1.8 J. What is the elastic potential energy of the system when the 3.2 kg block is replaced by a 5.0 kg block?

    asked by Adam on May 9, 2010
  15. college

    Figure 11-50 shows two examples of SHM, labeled A and B. (The vertical axis is marked in increments of 0.5 m and the horizontal axis is marked in increments of 1 s.)

    asked by Anonymous on December 6, 2010
  16. college

    In an isometric exercise a person places a hand on a scale and pushes vertically downward, keeping the forearm horizontal. This is possible because the triceps muscle applies an upward force Marrowbold perpendicular to the arm, as the drawing indicates.

    asked by Anonymous on November 25, 2010
  17. college

    from 0 to (π/2) ∫(sin^3⁡θ cos^3⁡θ dθ)

    asked by Laplace transform on May 31, 2010
  18. college

    If the same amount of heat is supplied to sample of 10.0g each aluminum, iron,and copper all at 15 degrees celsius which sample would reach the highest temperature????

    asked by amy on September 4, 2010
  19. college

    A ceiling fan has 15 -inch blades (so the radius of the circular fan is 15 inches). Suppose the fan turns at a rate of 60 revolutions per minute. (a) Find the angular speed of the fan in radians per minute. (b) Find the linear speed of the tip of a blade

    asked by Ange on September 11, 2016
  20. college

    Find the 90% confidence interval for the variance and the standard deviation of the ages of seniors at Oak Park College if a sample of 24 students has a standard deviation of 2,3 years. Assume the variable is normally distribution

    asked by bjacobs on February 16, 2011
  21. college

    105 of is initially at room temperature (22). A chilled steel rod at 2 is placed in the water. If the final temperature of the system is 21.3, what is the mass of the steel bar? Specific heat of water = 4.18 Specific heat of steel = 0.452

    asked by Philadelphia University on October 31, 2010
  22. college

    At the center of a 50 m diameter circular ice rink, a 75 kg skater traveling north at 2.5 m/s collides with and holds onto a 60 kg skater who had been heading west at 3.5 m/s. How long will it take them to get to the edge of the rink. Where will the reach

    asked by charlotte on December 1, 2010
  23. college

    Two point charges have a total charge of 505 µC. When placed 1.10 m apart, the force each exerts on the other is 19.3 N and is repulsive. What is the charge on each? (Round your answers to the nearest µC.)

    asked by Eric on August 29, 2010
  24. college

    Kp for the reaction CO2(g) + C(s) 2CO(g) is 1.47 at 727°C. Calculate Kc at this temperature

    asked by gggg on July 22, 2012
  25. college

    In warm climates, drinking water is often cooled by evaporating water from the surfaces of clay pots or canvas bags. How many liters of water may be cooled from 37 ºC to 24 ºC by the evaporation of 100 g of water? The heat of vaporization of water is 2.4

    asked by Abiola Ajibola on October 28, 2010
  26. college

    a point source is on the bottom of a pool 2m deep. find the diameter of the largest circle at the surface which light can emerge from the water (n=1.33)

    asked by stela on November 11, 2013
  27. college

    Assume that there are 16 frozen dinners: 8 pasta, 4 chicken, and 4 seafood dinners. The student selects 5 of them. What is the probability that at least 2 of the dinners selected are pasta dinners? I tried this:

    asked by Sigmund on March 1, 2009
  28. college

    A coin dealer, offered a rare silver coin, suspected that it might be a counterfeit nickel copy. The dealer heated the coin, which weighed 14.0 g to 100°C in boiling water and then dropped the hot coin into 29.5 g of water at T = 15.0°C in an insulated

    asked by andrea on October 18, 2010
  29. college

    A bag contains a mixture of copper and lead BBs. the Average density of the BBs is 9.50g/cm^3. Assuming that the copper and lead are pure determine the relative amounts of each kind of BB

    asked by inny on October 15, 2010
  30. college

    atoms heated in a sample emit only certain colors of light in sharp lines and not all colors blended together tells us what about the energy of an atom?

    asked by Brian on October 20, 2009
  31. college

    A woman can see clearly her right eye only when objects are between 45 cm and 155 cm away. Prescription bifocals should have what powers so that she can see distant objects clearly(upper part) and be able to read a book 25 cm away(lower part) with her

    asked by Sandhya on April 19, 2009
  32. college

    The expected number of heads in 160 tosses of an unbiased coin is ___.

    asked by BB on September 14, 2009
  33. college

    while a patient is having surgery,his doctor notices a small mole.The doctor doesn't think the mole is anthing to worry about,but he decides to remove it to perform a biopsy.What is the doctor guilty of?

    asked by ELLA on July 9, 2010
  34. college

    You are trying to overhear a juicy conversation, but from your distance of 16.0 , it sounds like only an average whisper of 20.0 . So you decide to move closer to give the conversation a sound level of 65.0 instead. How close should you come?

    asked by jim on March 11, 2010
  35. college

    A block of mass m is dropped from the fourth floor of an office building, subsequently hitting the sidewalk at speed v. From what floor should the mass be dropped to double that impact speed?

    asked by Anonymous on June 15, 2010
  36. college

    2 kg of air, initially at 5 bar, 350 K and 4 Kg of carbon monoxide initially at 2 bar, 450 K are confined to opposite sides of a rigid, well insulated container. The partition is free to move and allows conduction from one gas to the other without energy

    asked by Nayi on October 2, 2008
  37. college

    A blue ball is thrown upward with an initial speed of 19.8 m/s, from a height of 0.5 meters above the ground. 2.4 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 7.9 m/s from a height of 22.5 meters above the

    asked by ali on September 3, 2012
  38. college

    A train is heading due west from St. Louis. At noon, a plane flying horizontally due north at a fixed altitude of 4 miles passes directly over the train. When the train has traveled another mile, it is going 80 mph, and the plane has traveled another 5

    asked by Joshua on December 6, 2010
  39. college

    A proton is traveling to the right at 2.5×10^7m/s . It has a head-on perfectly elastic collision with a carbon atom. The mass of the carbon atom is 12 times the mass of the proton. What are the speeds of each after the collision?

    asked by Dan on October 18, 2009
  40. college

    The density of an alloy is 5000 kg/m3. What is the density in g/cm3?

    asked by Anonymous on September 28, 2014
  41. college

    Electric fields are vector quantities whose magnitudes are measured in units of volts/meter (V/m). Find the resultant electric field when there are two fields, E1 and E2, where E1 is directed vertically upward and has magnitude 96 V/m and E2 is directed

    asked by Anonymous on April 28, 2010
  42. college

    Calculate the force of Earth's gravity on a spacecraft 12,800 km (2 Earth radii) above the Earth's surface if its mass is 1550 kg.

    asked by Anonymous on February 22, 2010
  43. college

    A sports car of mass 1300 kg (including the driver) crosses the rounded top of a hill (r = 86 m) at 23 m/s. Determine the normal force exerted by the road on the car. Determine the normal force exerted by the car on the 74 kg driver. Determine the car

    asked by Anonymous on February 22, 2010
  44. college

    What will the following pseudocode program display? Module main( ) Declare Integer x = 1 Declare Real y = 3.4 Display x, " ", y Call changeUs(x, y) Display x, " ", y End Module Module changeUs(Integer a, Real b) { Set a = 0 Set b = 0 Display a, " ", b }

    asked by timi on November 1, 2009
  45. college

    a solution is prepared by mixing 50.0 mL toluene (C6H5CH3 d=0.867 g/mL) with 125 mL Benzene (C6H6 d=0.874 g/mL). assuming that the volumes add upon mixing, calculate the mass percent, mole fraction, molality, and molarity of the toluene.

    asked by Kyle on January 5, 2015
  46. college

    The approximate vapor pressure of CS2 at 30 degrees Celsius?

    asked by Helen on December 13, 2010
  47. college

    A firm has a debt to asset ratio of 75%, $240,000 in debt, and net income of $48,000. Calculate return on equity.

    asked by Syndi on October 31, 2010
  48. college

    A quantity of ice at 0°C is added to 65.0 g of water in a glass at 55°C. After the ice melted, the temperature of the water in the glass was 15°C. How much ice was added? The heat of fusion of water is 6.01 kJ/mol and the specific heat is 4.18

    asked by Anonymous on July 14, 2010
  49. college

    x2-x-1806=0 by completing the square

    asked by saad on October 28, 2010
  50. college

    he forensic technician at a crime scene has just prepared a luminol stock solution by adding 12.0 g of luminol into a total volume of 75.0 \rm mL of \rm H_2O.

    asked by Anonymous on October 19, 2009
  51. college

    Electro-Rad Inc., a developer of radiology equipment, has stock outstanding as follows: 50,000 shares of 2%, preferred stock of $50 par, and 100,000 shares of $25 par common. During its first four years of operations, the following amounts were distributed

    asked by Christina on September 24, 2009
  52. college

    18.0 grams of oxygen is reacted with nitrogen to make 56.0 grams of nitrogen dioxide according to the following reaction: 2O2 + N2 ---> 2 NO2 How much nitrogen (in grams) reacted?

    asked by SAMM on November 19, 2010
  53. college

    When I was considering what to do with my $10,000 Lottery winnings, my broker suggested I invest half of it in gold, the value of which was growing by 12% per year, and the other half in CDs, which were yielding 5% per year, compounded every 6 months.

    asked by Anne on October 20, 2010
  54. college

    Find the rms speed of a helium molecule at 321 K

    asked by Anonymous on April 29, 2010
  55. college

    The arm in the figure below weighs 44.5 N. The force of gravity acting on the arm acts through point A. Determine the magnitudes of the tension force t in the deltoid muscle and the force s of the shoulder on the humerus (upper-arm bone) to hold the arm in

    asked by sarah on November 6, 2009
  56. college

    what will be the final temperature of a 514-g sample of water, intially at 10.0 celsius, after 90.8 kilo joules have been added o it ?

    asked by queen on February 28, 2009
  57. college

    What consititutes an ideal learning enviorment? I would say whatever you are most comfortable with. I like distance learning because it has a lot of flexibility but I do miss the physical classroom environment where the teacher is available on a momen't

    asked by jim on August 12, 2007
  58. college

    a guy wire 27 feet long runs from the top of the pole to a spot on the ground. I f the height of the pole is 6 feet longer than the from the base of the pole to the spot where the guy wire is anchored, how tall is the pole?

    asked by Anonymous on April 21, 2013
  59. college

    the perimeter of the rectangle is 294cm, the width is 57 cm, find the length

    asked by harriett on July 15, 2010
  60. college

    Find the rms speed of a helium molecule at 321 K

    asked by Anonymous on April 29, 2010
  61. college

    If a single bacteria divides in half every 20 min. how many would you have after 42 hours?

    asked by Christina on February 6, 2010
  62. college

    Suppose is the sale price of an item whose original price is in a 35% off sale. Is directly proportional to ? If it is, enter the constant of proportionality as a decimal, not a percent

    asked by Anonymous on August 29, 2010
  63. college

    For the reaction NO(g) + O3(g) „_ NO2(g) + O2(g) The frequency factor A is 8.7 X 1012 s-1 and the activation energy is 63kJ/mol. What is the rate constant for the reaction at 75 ¢XC?

    asked by Kelvin on May 14, 2009
  64. college

    Which of the following would NOT be considered discrimination? 1. Sue believes poor people are criminals. 2. Sue refuses to give Jane a ride to work because Jane is poor. 3. Jane, who is poor, vandalizes the cars of rich people who she believes are snobs.

    asked by dean on February 5, 2009
  65. college

    Write a C++ program to fill an array with 6 numbers, and then reverse the values of this array. Note: By using a function with two parameters with the name of the array and the size of this array.

    asked by ola on December 22, 2010
  66. college

    A 2 kg ball of putty moving to the right at 3m/s has a head-on inelastic collision with a 1 kg ball of putty moving to the left at 3m/s. What is the final magnitude and direction of the velocity of the stuck together balls after the collision?

    asked by Misty on June 8, 2010
  67. college

    A tortoise can run with a speed of 0.10m/s and a hare can run 20 times as fast. In a race, they start at the same time, but the hare stops to rest for 2.0min. The tortoise wins by a shell (20cm). How long does the race take? What is the length of the race?

    asked by Whitney on February 2, 2010
  68. college

    I need to write a net ionic equation for Sr{2+}+ Hg2 + NaCL =

    asked by Susan on November 20, 2010
  69. college

    Contrast utilitarian and deontological approaches to a dilemma involving a potential employee liberally enhancing (lying on) her resume.

    asked by Anonymous on November 13, 2010
  70. college

    A cyclopropane-oxygen mixture is used as an anesthetic. If the partial pressure of cyclopropane in the mixture is 334 mm Hg and the partial pressure of the oxygen is 1.02 atm, what is the total pressure of the mixture in torr?

    asked by malik on November 13, 2010
  71. college

    How do i calculate the number of equivalents of h2c4h4o4 titrated?

    asked by Kaitlyn on October 20, 2010
  72. college

    What role does ovaries play in the homeostasis subject, and what other reaearch about the ovaries is currently taking place?

    asked by kevin on August 12, 2010
  73. college

    1. Capstone CheckPoint „h Due Date: Day 4 [Individual forum] „h Answer the following questions in a 100- to 200-word response. Cover each bullet point in your answer. o In the future, how will thinking critically influence the ways that you: „h Read?

    asked by Anonymous on October 8, 2009
  74. college

    i am not good with history and i have an assignment on how the united states became involved with the politics in southeast Asia and how it affected the politics in the united sates. If anybody can help me it would be greatly appreciated

    asked by michelle on May 23, 2009
  75. college

    The manager of a Drug Store knows that 50% of the customers entering the store buy prescription drugs, 65% buy over-the-counter drugs, and 18% buy both types of drugs. What is the probability that a randomly selected customer will buy at least one of these

    asked by Marie on April 13, 2009
  76. College

    Three(3) digit numbers can be formed from the digits 0,1,3,5,7 and 8. How many numbers can be formed without repeats. (A) if the 3 digits numbers must be divisible by 5. (b) if the 3 digits number must be a multiple of 2

    asked by Ibrahim issahaku kpaniyili on July 17, 2015
  77. College

    An electron enters the region of a uniform electric field, with v1=3*10^6 m/s and E=200N/C. The horizontal length of the plates is 0.100m 1. Fine the acceleration of the electron while in the field. 2. If the electron enters the field at a time t=0, find

    asked by Tsoanelo on April 22, 2012
  78. college

    If two indistinguishable dice are rolled, what is the probability of the event {(2, 2), (3, 2), (1, 2)}?

    asked by Daniel on December 6, 2010
  79. college

    It takes 51.0 j to raise the temperature of an 8.60 g piece of unknown metal from 13.0 C to 25.0 C. What is the specific heat for the metal?

    asked by Anonymous on October 27, 2010
  80. college

    Assume that the student has a cup with 13 writing implements: 7 pencils, 4 ball point pens, and 2 felt-tip pens. In how many ways can the student select 9 writing implements if no more than one ball point pen is selected?

    asked by finite on September 21, 2010
  81. college

    During a particular thunderstorm, the electric potential difference between a cloud and the ground is Vcloud - Vground = 1.3 × 108 V, with the cloud being at the higher potential. What is the change in an electron's electric potential energy when the

    asked by ash on August 27, 2010
  82. college

    what aspects of the social and work environment in a fast-food restaurant would be of particular interest to a sociologist because of his or her sociological imagination?

    asked by Bevyette on June 13, 2010
  83. College

    Identify the advantages of modern symbolic logic over classical logic (categorical syllogisms)?

    asked by John on February 25, 2011
  84. college

    The angle of elevation from point A to the top of a vertical pole is 30.0 degrees. At point B, 6 meters closer to the base of the pole and on a line through the base of the pole and point A, the angle of elevation to the top of the pole is 37.0 degrees.

    asked by Ashley on December 11, 2010
  85. college

    If 0.0900 g of a metal, M, reacts with excess hydrochloric acid to form 5.00*10(exp.)-3 moles of hydrogen gas and a solution of MCl(subscript)3. Calculate the molar mass of metal, M and identify it. The unbalanced equation is: M(s)+ HCl(aq) =>MCl(sub.)3 +

    asked by Alex on November 30, 2010
  86. college

    How fast (in rpm) must a centrifuge rotate if a particle 8.2 cm from the axis of rotation is to experience an acceleration of 200000 g 's?

    asked by Sasha on October 29, 2010
  87. college

    Do some research into why the United States has been so slow to adopt metric measurements. What problems does this cause for the United States? What benefits might it bring the United States? How might you resolve the gap between the United States'

    asked by ca on October 23, 2010
  88. college

    If a 0.5 -mL air bubble is persent in the tip of a buret, what error in 10-mL,20 m l and 40-mL samples will result if the air bubble is dislodged during the dispensing of the sample?

    asked by Anonymous on September 27, 2010
  89. college

    I need opinions on social issues of human trafficking. This is what I have so far Human trafficking is a serious social issue around the world, because it violates human rights. The human and social issues of human trafficking can consist of: Physical

    asked by patiance on August 11, 2010
  90. college

    QuadPlex Cinema is the only movie theater in Idaho Falls. The nearest rival movie theater, the Cedar Bluff Twin, is 35 miles away in Pocatello. Thus QuadPlex Cinema possesses a degree of market power. Despite having market power, PuadPlex Cinema is

    asked by Kelly on July 24, 2010
  91. college

    In the reaction Fe2O3 + 3CO ¨ 2Fe + 3CO2 How much CO is used to produce 112 grams of iron?

    asked by Dillon on July 12, 2010
  92. college

    3. What are the common elements of healthy relationships

    asked by Anonymous on June 14, 2010
  93. college

    American Tire and Rubber Company sells identical radial tires under the firm's own brand name and private label tires to discount stores. The radial tires sold in both sub-markets are identical, and the marginal cost is constant at $10 per tire for both

    asked by vvbnv on April 11, 2010
  94. College

    A room is 13 ft. It needs to be painted. The ceiling is 8 ft above the floor. there are two windows int he room, each one is 3 ft by 4 ft. The door is 2.5 ft by 6.5 ft. What is the area of the wall and ceiling? 1 gallon of paint covers 64.37sq ft. How many

    asked by Anonymous on June 16, 2011
  95. college

    1. Critically evaluate the job analysis that Mary conducted for the position of assistant manager. Has she used appropriate methods? What are the strengths and weaknesses of her efforts? 2. What kind of factors about Today's Fashion and its operations

    asked by Anonymous on June 6, 2011
  96. college

    Write as a single log : 3log2+2log8- 1/2 log4 ( simplify your answer) Ans

    asked by Anonymous on December 9, 2010
  97. college

    It is stand accounting procedures, or GAAP, to make an adjusting entry to remove the current year’s principle from the long-term liabilities. This entry reduces the long-term liabilities and increases the current liabilities. You are the bookkeeper for

    asked by carrie on September 25, 2010
  98. college

    a rock is dropped off a bridge. How fast is it moving when it hits the water 2.5s later?

    asked by josh on September 7, 2010
  99. college

    A 1.362 g sample of an iron ore that contained Fe_3O_4 was dissolved in acid and all the iron was reduced to Fe^2+. the solution was then acidified with H_2SO_4 and titrated with 39.42 mL of 0.0281 M KMnO_4 , which oxidized the iron to Fe^3+. Net ionic

    asked by mohd on April 3, 2010
  100. college

    a researcher reports an F-ratio with df=3,36 from an idependent-measure research study. a-how many treatment condition were compared in the study? b-what was the total number of participant in the study

    asked by kd lewis on March 7, 2010


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